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Encyclopedia > Control engineering

Control engineering is the engineering discipline that focuses on the mathematical modelling systems of a diverse nature, analysing their dynamic behaviour, and using control theory to make a controller that will cause the systems to behave in a desired manner. Engineering is the application of scientific and technical knowledge to solve human problems. ... A mathematical model is an abstract model that uses mathematical language to describe the behaviour of a system. ... For the application to living systems, see perceptual control theory. ...

Contents


Background

Modern Control engineering is closely related to electrical and electronics engineering, as electronic circuits can often be easily described using control theory techniques. At many universities, control engineering courses are primarily taught by electrical engineering faculty. Previous to Modern Electronics, process control devices were devised by Mechanical Engineers using mechanical feedback along with pneumatic and hydraulic control devices. It may be hard to imagine but some of these old mechanical devices are still in use. Electrical and electronics engineering may refer to: Electrical engineering: a field covering mainly the study and application of electricity and electromagnetism. ...


The field of control within chemical engineering is often known as process control. It deals primarily with the control of variables in a chemical process in a plant. It is taught as part of the undergraduate curriculum of any chemical engineering program. It employs many of the principles in control engineering, and is a well-established field in its own right. Chemical engineering is the application of science, in particular chemistry, physics and mathematics, to the process of converting raw materials or chemicals into more useful or valuable forms. ... Process control is an engineering discipline that deals with architectures, mechanisms, and algorithms for controlling the output of a specific process. ...


Other engineering disciplines also overlap with control engineering, as it can be applied to any system for which a suitable model can be derived.


Control engineering has diversified applications that include science, finance management, and even human behaviour. Students of control engineering may start with a Linear Control System course which requires elementary mathematics and Laplace Transforms (called classical Control Theory). In Linear Control, the student does Frequency and Time domain analysis. Digital Control and Non Linear Control courses require Z Transformations and Algebra respectively, and could be said to complete a basic control education. From here onwards there are several sub branches. In mathematics and signal processing, the Z-transform converts a discrete time domain signal, which is a sequence of real numbers, into a complex frequency domain representation. ...


Control systems

Control systems play a critical role in space flight
Control systems play a critical role in space flight

Control engineering is the engineering discipline that focuses on the modelling of a diverse range of dynamic systems and the design of controllers that will cause these systems to behave in the desired manner. Although such controllers need not be electrical many are and hence control engineering is often viewed as a subfield of electrical engineering. Image File history File links Download high resolution version (700x813, 126 KB)Launching of the NASA Space Shuttle Columbia on STS-1 in April 1981. ... Image File history File links Download high resolution version (700x813, 126 KB)Launching of the NASA Space Shuttle Columbia on STS-1 in April 1981. ... Currently, the most common technology for space transport is rocket propulsion, which expels matter to provide a net forward thrust. ... Discipline is any training intended to produce a specific character or pattern of behaviour, especially training that produces moral or mental development in a particular direction. ... A mathematical model is an abstract model that uses mathematical language to describe the behaviour of a system. ... In engineering and mathematics, a dynamical system is a deterministic process in which a functions value changes over time according to a rule that is defined in terms of the functions current value. ... Basic Principles A controller is the brain component of a system that monitors certain input variables and adjusts other output variables to achieve the desired operation. ...


Electrical circuits, digital signal processors and microcontrollers can all be used to implement Control systems. Control engineering has a wide range of applications from the flight and propulsion systems of commercial airliners to the cruise control present in many modern automobiles. An electrical network or electrical circuit is an interconnection of analog electrical elements such as resistors, inductors, capacitors, diodes, switches and transistors. ... Digital signal processing (DSP) is the study of signals in a digital representation and the processing methods of these signals. ... A microcontroller (MCU) is a computer-on-a-chip used to control electronic devices. ... It has been suggested that this article or section be merged with Control theory. ... An Airbus A340 airliner operated by Air Jamaica An airliner is a large fixed-wing aircraft whose primary function is the transportation of paying passengers. ... Cruise control (sometimes known as speed control or Autocruise, with the acronym ACC) is a system to automatically control the speed of an automobile. ... An automobile is a wheeled vehicle that carries its own motor. ...


Control engineers often utilize feedback when designing control systems. For example, in an automobile with cruise control the vehicle's speed is continuously monitored and fed back to the system which adjusts the motor's speed accordingly. Where there is regular feedback, control theory can be used to determine how the system responds to such feedback. In practically all such systems stability is important and control theory can help ensure stability is achieved. Feedback is (generally) information about actions. ... It has been suggested that this article or section be merged with Control theory. ... An automobile is a wheeled vehicle that carries its own motor. ... Cruise control (sometimes known as speed control or Autocruise, with the acronym ACC) is a system to automatically control the speed of an automobile. ... Speed (symbol: v) is the rate of motion, or equivalently the rate of change of position, expressed as distance d moved per unit of time t. ... A colorized automobile engine The internal combustion engine is a heat engine in which the burning of a fuel occurs in a confined space called a combustion chamber. ... Speed (symbol: v) is the rate of motion, or equivalently the rate of change of position, expressed as distance d moved per unit of time t. ... For the application to living systems, see perceptual control theory. ... The word stability has a number of technical meanings, all related to the common meaning of the word. ... For the application to living systems, see perceptual control theory. ...


Although feedback is an important aspect of control engineering, control engineers may also work on the control of systems without feedback. This is known as open loop control. A classic example of open loop control is a washing machine that runs through a pre-determined cycle without the use of sensors. This article is about an engineering theory called control theory. ... This article is about an engineering theory called control theory. ... Front-loading washing machine. ... To meet Wikipedias quality standards, this article or section may require cleanup. ...


See also

Process control is an engineering discipline that deals with architectures, mechanisms, and algorithms for controlling the output of a specific process. ... H infinity or is a method in control theory for the design of optimal controllers. ... In mathematics, the Laplace transform is a powerful technique for analyzing linear time-invariant systems such as electrical circuits, harmonic oscillators, optical devices, and mechanical systems, to name just a few. ... Optimal control theory is a mathematical field that is concerned with control policies that can be deduced using optimization algorithms. ... Small R/C servo mechanism 1. ... Non-linear control is a sub-division of control engineering which deals with the control of non-linear systems. ... When the parameters of a system are slowly time-varying or uncertain, we need a control law that adapts itself under such conditions to give reliable performance. ... In robust control, the word robust means that the controller or regulator should work well (e. ... All control techniques that use various soft computing approaches like neural networks, Bayesian probability, fuzzy logic, machine learning, evolutionary computation and genetic algorithms can be put into the class of intelligent control. ... In control engineering, a state space representation is a mathematical model of a physical system as a set of input, output and state variables related by first-order differential equations. ... Model Predictive Control, or MPC, is an advanced method of process control that has been in use in the process industries such as chemical plants and oil refineries since the 1980s. ... Developed by Horowitz (Horowitz, 1963; Horowitz and Sidi, 1972), is a frequency domain technique utilising the Nichols Chart (NC) in order to achieve a desired robust design over a specified region of plant uncertainty. ... This article or section contains information that has not been verified and thus might not be reliable. ... Feedback is (generally) information about actions. ... VisSim is a visual block diagram language for modeling, simulating and analyzing dynamic systems. ... The problem of creating a robotic unicycle, a self-powered unicycle that balances itself in three dimensions, is an interesting problem in robotics and control theory. ...

External links


  Results from FactBites:
 
Control Engineering Fact Sheet (658 words)
Control engineering is used to optimize the performance of engineered products with respect to measures such as energy and material usage, speed, reliability and accuracy of direction, or velocity of mechanical motion.
Control engineering is an area of specialization within the Department of Electrical and Computer Engineering (ECE) at North Dakota State University.
Control systems have ranged from the centrifugal governor controlling the speed of James Watt's 18th century steam engine to computer-based autopilots controlling the flight paths of 20th century jumbo jets.
Control engineering - Wikipedia, the free encyclopedia (583 words)
Control engineering is the engineering discipline that focuses on the mathematical modelling systems of a diverse nature, analysing their dynamic behaviour, and using control theory to make a controller that will cause the systems to behave in a desired manner.
Control engineering is the engineering discipline that focuses on the modelling of a diverse range of dynamic systems and the design of controllers that will cause these systems to behave in the desired manner.
Control engineering has a wide range of applications from the flight and propulsion systems of commercial airliners to the cruise control present in many modern automobiles.
  More results at FactBites »

 
 

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